Recipient address rejected: aol.com

[Grant]

Does this mean the email address doesn't exist?

<exam...@aol.com>: host mailin-04.mx.aol.com[64.12.138.161] said: 550 5.1.1
<exam...@aol.com>: Recipient address rejected: aol.com (in reply to
RCPT TO command)

- Grant